Case Study SCCP ADDRESSING SCCP • The SCCP is the layer that enables an SS7 to route MAP messages. • The SCCP runs in top of the MTP network. SCCP ADDRESSES The SCCP uses the following addresses: • Calling address — identifies call origination • Called address — identifies call destination SCCP uses the following elements: • Destination Point Code (DPC) • Global Title (GT) • SCCP SubSystem Numbers (SSN) GLOBAL TITLE (GT) • Address Information (AI) • Nature of Address (NA) • Numbering Plan (NP) • Translation Type (TT) GT requires further translation in-order to make it compatible with the signaling network. SUBSYSTEM NUMBER (SSN) This is used to identify the relevant node. e.g HLR NUMBERING PLAN (NP) indicates the numbering plan the address is originating from e.g e.164,e.165,e.214,3.212 GLOBAL TITLE (GT) . Case Study SCCP ADDRESSING SCCP • The SCCP is the layer that enables an SS7 to route MAP messages. • The SCCP runs in top of the MTP network. SCCP ADDRESSES The SCCP uses the following. origination • Called address — identifies call destination SCCP uses the following elements: • Destination Point Code (DPC) • Global Title (GT) • SCCP SubSystem Numbers (SSN) GLOBAL TITLE (GT) • Address